Do good walls make good neighbors? the sacred and the secular in religion clause jurisprudence

In deliberating on the application of the Establishment and Free Exercise Clauses of the United States Constitution’s First Amendment, the Supreme Court since 1947 has consistently failed to develop a principled distinction between religion and non-religion. This has hampered its ability to respond to developing challenges in Religion Clauses jurisprudence and to interpret those clauses in a systematic manner. Its recourse to facile characterizations of secularism and pluralism has exacerbated this problem. Attending to incoherence in the Court’s understanding of religion points to a definition of religion based in revelation and grounded not in the language of preference, identity or value, but in natural law and metaphysics.